Boiler cleaner



Sept. 16, 1930. F. BowERs Boum summa;

Filed Nov. 6, 1922 Patented Sept. 16, 193) UNITE, STATES `ATEN'E' FICE' FRANK BOJVER. F DETROIT, MCHGAN, ASSGNOR TO DAMOND POW'ER SPECIALTY CORPORATION, OF DETROT,

BOLER CLEANER Application filed November 6, 1922. Serial No. 599,355.

This invention relates to boiler cleaners and reiiers more particularly to boiler cleaners ot the type in which a rotating blower pipe or unit is employed for discharging jets of steam or other cleaning fluid against the tubes or other surfaces to be cleaned.

One ot the main objects ol the invention is to provide an improved automatic valve arrangement whereby the supply ot steam to io the blower unit is automatically controlled so to be opened at predetermined portions only of the rotation et the unit; to provide a valve arrangement which is accessible so that can be readily removed and the valve port is increased to meet the desired amount ot rotation required; to provide a construction which will permit of a rotation ot the unit through a substantially complete are while the valve is in the open position; to provide 2o a valve which will be automatically held to its seat in a closed position, preferably by the pressure ot the steam; anc in general to provide a new and improved construction of the character above referred to.

In the drawings:

Fig. l is a vertical sectional view partly in elevation showing one embodiment of my invention.

Fig. 2 is a section through the line 2-2 ot an Fig. 1.

Describing the construction shown in Figs. l and 2, A designates the blower pipe having nozzles A adapted to discharge jets of steam against the tubes A2. Steam to the blower pipe A is provided by an inlet pipe B2 the communication between which and the blower pipe is controlled by a valve mechanism as follows z At its outer end the blower pipe A is provided with the enlarged extension C having the port C. rlhis extension is mounted within the blower head or housing D which is sul'licient-ly greater in diameter than the extension C as to leave a space D through which steam from the inlet B can pass around the extension C. Surrounding the extension C there is provided a member E secured against rotation by the set screw R, the member E being cut away at E as shown in Fig. 2 so as to leave a port of whatever size desired,

which port when in registration with the port C will permit steam to pass from the inlet pipe B to the blower pipe A. When, however, the port C is rotated so as to come in contact with the portion oi the member E which is not cut away, communication between the inlet pipe B and the blower pipe A will be cut oit. It is to be noticed that in this cut oil position the steam will be on the Outside ot' the member E and the steam pressure ot the boiler will there'tore tend to contract the member E about the extension C and term a tight seal to prevent leakage. For rotating the blower pipe there is provided a chain wheel F about which a chain F eX- tends, this chain reaching to the floor or other convenient position tor use. The chain wheel F is ixedly secured to the end G of the blower pipe so that upon rotation of the blower pipe the ports E and C will come into registration and remain in registration during predetermined portions-ot the rotation of the blower pipe. In the particular construction shown inthe drawings, these ports are so proportioned that steam is supplied to the blower pipe while the latter is rotating through 180". As before pointed out, the port in member E may be varied to provide a steam supply to the blower pipe through any desired arc of rotation.

One important feature of the invention is the fact that by removing the casing D the member E can be readily removed. Thus to change the installation to take care of ditterent arcs of rot-ation through which the steam should be discharged so as not to discharge against the baliies, it is only necessary to remove the member E and either substitute another member or else to cut a larger opening E in the member E.

By making the extension C, provided with port C', or' greater diameter than the blower pipe A, I provide a construction which will avoid restriction of the steam where it enters the blower pipe. In a cylindrical valve, in order to make it quick opening, the port is made narrow and long. With such construction the diameter of the valve is ordinarily made substantially the same as that ot the blower pipe, restriction of the steam then occurring immediately beyond the point `where the valve port ends. IVith my construction this objectionable restriction of the steam is prevented.

What I claim as my invention is:

l. In a boiler cleaner, a blower head, a cleaning fluid supply pipe, a blower pipe provided with an enlarged portion located within said blower head, the enlarged portion having an inlet port, a member` mounted in said head but circumferentially spaced therefrom, said member being iXed against movement with said blower pipe and being adapted to periodically cover and uncover said port, and means for moving the blower pipe relative to said member.

2. In a boiler cleaner, a rotatable blower pipe provided with nozzles Jfor the discharge of steam adjacent the heating' surfaces of the boiler, a cleaning Huid supply pipe therefor, a l'itting mounted exteriorly of the boiler and forming a connection between said blower pipe and said cleaning fluid supply pipe, said blower pipe being provided with an enlarged portion journaled in said fitting, the enlarged portion having an enlarged inlet port, a member fixed against movement with said blower pipe mounted in said fitting and circumferentially spaced therefrom for periodically covering and uncovering said port, said member so cooperating with said enlarged portion of the blower pipe as to be subjected to steam pressure tending to main-V tain the member in sealing contact with the enlarged portionvof the blower pipe.

In testimony whereof I alix my signature.

FRANK BOWERS. 

